Compression test only at 90 psi max, timing chain off?

Some of you guys are gonna have this guy so screwed up making a big deal about the "line it up to 6 and 12 O'clock" or "line it up to 12 and 12 O' clock" or it won't be right. As pointed out by replicar and 65Dart GT the cam spins at half the speed of the crank (that's why the cam gear is exactly twice the size as the crank gear) and if you do line up the dots at 12 and 6 O'clock and spin the engine exactly 1 revolution the dots will magically be at 12 and 12 O'clock. When their at 12 and 12 O'clock that's TDC #1 firing (compression stroke). When the dots are at 12 and 6 O'clock the engine is at #1 TDC exhaust stroke. Remember guys our engines are 4 cycles so there is 2 top dead centers per combustion cycle.

Zig my guess is the cam timing (timing chain) is off a tooth or 2 or maybe you got an improperly ground cam. That's why all cam's should be degree'd in upon install. It eliminates any guessing. I'd first verify the new compression gauge is accurate and if it is you have 2 options, do like 67Dart said and see if it looks close or take off the front cover to verify things. When the engine is in the car it's not the easiest thing to look down and see if the dots are lined up so I use a straight steel ruler held on the center line of the crank and cam to see if the dots are lined up. And if it does happened to be lined up I'd degree it in to make sure you didn't get a junk cam. It doesn't happen often but it does happen.